Plat pocket loader



Jan. 30, 1951 w. J. BOASE 2,539,770

PLAT POCKET LOADER Filed March 25, 1948 5 Sheeps-Sheet l I ant-1;

Jan. 30, 1951 w. J. BOASE PLAT POCKET LOADER 3 Sheets-Sheet 2 FiledMarch 25, 1948 mmiutm kimkwswk gwvcmiov Boczse Jan. 30, 1951 w. J. BOASEPLAT POCKET LOADER 5 Sheets-Sheet 3 Filed March 25, 1948 M o w M572.:[Baaae Patented Jan. 30, 1951 i UNITED STATES PATENT QFFICE.

PLAT POCKET LOADER William James Boase, Negaunee, Mich.

Application March 25, 1948, Serial No. 16,903

1 Claim. 1

This invention relates to new and useful improvements in plat pocketloaders, for loading ore or other materials into measuring pockets.

One object of my invention is to provide a plat pocket loader that willeliminate the necessity, at the pit, for a large storage pocket, intowhich certain ores have a tendency to pack and delay loading into themeasuring pockets, thus holding up and increasing cost of production.

A further object of my invention is to provide a plat pocket loader ofthe character specified that will reduce the sinking of the shaft to aconsiderable extent by doing away with the storage pocket into which thehaulage tram car dumps its ore.

With the foregoing and other objects in view that will appear as thenature of my invention is better understood, the same consists in thenovel features of construction, combination and arrangement of partsillustrated in the accompanying drawings and more particularly pointedout in the appended claim.

In the accompanying drawings, which are for illustrative purposes onlyand are therefore not drawn to scale:

Figure l is a side elevation of a plat pocket loader, constructed inaccordance with my invention.

Figure 2 is a vertical sectional View, taken through the storage pit,measuring pocket, skip and associated parts.

Figure 3 is an enlarged horizontal section of the loader.

Figure 4 is a vertical longitudinal section, taken on line 4-4 of Figure3, and Figure 5 is a diagrammatic view.

Referring to the drawings for a more particular description of myinvention, and in which drawings like parts are designated by likereference characters throughout the several views, the numeral Idesignates the haulage tram car, 2 my plat pocket loader, as a whole, 3a shallow steel linedstorage pit extending along the shaft side of thehaulage track, 4 and t the measuring pockets situated below the bottomof the storage pit 3, 5 the skip and 6 the shaft.

The loader comprises the hollow carriage I, mounted on the trucks 8 and9, which travel back and forth on the track rails I0, over the storagepit 3.

The loader carriage is driven by two independent motors I I and I2,which are. geared to the pinions i3 and I4 of the truck shafts.

.Right and left-hand scrapers I5 and I6, re-

arranged with their inwardly tapered side members I1 and I8 straddlingopposite ends of the loader carriage I, and with their extreme innerends pivoted, as at I9 and 20, to opposite sides of the latter. Theouter ends of the scrapers I5 and I6 are provided with the scraperblades 2| and 22, respectively, which are raised and lowered by theindependent right and left-hand feed motors 23 and 24, geared by meansof the transverse shafts 25, gears 26 and pinions 21 to theperpendicular arc-shaped rack bars 28, carried by opposite sides of thescrapers.

With the use of my invention, the ore is dumped intothe storage pit 3and the loader scrapes the ore into the corresponding measuring pocketswhile the skip in that shaft compartment is ascending to surface, themeasuring pocket holding exactly one skip of ore, which is ready to bedeposited in the skip on its arrival at the mouth 'of the pocket. Inoperation, with the right-hand scraper up, the loader carriage is run tothe right until over the ore in the storage pit, when the aforesaidscraper is lowered by reversing the right-hand feed motor 23 and forcedinto the ore. The loader motors II and I2 are then reversed and theloader carriage caused to travel to the left with the left-hand scraperup, until the ore is carried by means of the right-hand scraper into thecorresponding measuring pocket. The righthand scraper is then raised andthe left-hand scraper lowered and forced into the ore, after whichoperation the loader motors are again reversed to cause the loadercarriage to travel to the right until the ore is carried by theleft-hand scraper into the corresponding measuring pocket, thuscompleting one cycle.

Figure 5 is a diagrammatic view, showing the circuits to the feed andloader motors, and the reversing switches, indicated by the referencenumerals 29, 30 and 3|, respectively.

From the foregoing description taken in connection with the drawings, itis thought that the construction, operation and advantages of myinvention will be readily understood, without requiring a more extendedexplanation.

Various changes in the form, proportions and minor details ofconstruction may be resorted to without departing from the principles orsacrificing any of the advantages of my invention, as defined in theappended claim.

Having described my invention, what I claim as new and desire to secureby Letters Patent, is:

A plat pocket loader for loading ore into measuring l pockets,comprising a movable carriage adapted travel back and forth over thestorage 2,539,770 3 4 pit, right and left-hand scrapers of substantiallyREFERENCES CITED U-shape form, arranged with their side membersstraddling opposite ends of the loader carriage 2 Yg g i f are of recordm the and with the inner ends of said side members pivoted to oppositesides of the latter, motors 5 UNITED STATES PATENTS geared to the trucksof the carriage, perpendicu- N ber Name Date lar arc-shaped rack barscarried by the scrapers. 984,249 Weschler Feb. 14, 1911 independentmotors geared to the rack bars of the right and left-hand scrapers, forraising and lowering the latter, and switches for controlling 10 saidfirst and second mentioned motors.

WILLIAM JAMES BO-ASE.

